Which of the following is the most accurate qualitative description of the magnetic field vector B⃗ inside the cylindrical resis
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Answer:
Explanation:
Given:
<u>the thermal resistance in the form of </u>
where:
are the thickness of the respective bricks
are the respective coefficient of conductivity
temperature inside the house,
temperature outside the house,
area of the wall,
Since the bricks and insulation are used to construct a wall then they must be used in series for better shielding.
<u>Using Fourier's law:</u>
in series the resistances get add up
I assume here that the engine operates following a Carnot cycle, which achieves the maximum possible efficiency.
Under this assumption, the efficiency of the engine (so, the efficiency of the Carnot cycle) is given by
where
is the cold temperature
is the hot temperature
For the engine in our problem, the cold temperature is 313 K while the hot temperature is 425 K, so the effiency of the engine is
Under this assumption, the efficiency of the engine (so, the efficiency of the Carnot cycle) is given by
where
For the engine in our problem, the cold temperature is 313 K while the hot temperature is 425 K, so the effiency of the engine is